An electronic ("EDGAR")
filing is transmitted herewith pursuant to rule 497 under the Securities Act of
1933, as amended (the "Securities Act), on behalf of Oppenheimer Rochester
Fund Municipals (the "Registrant"). This filing contains exhibits of
interactive data related to certain updated risk/return summary information
that was filed as a supplement to Registrant’s prospectus on March 25, 2014
(SEC Accession No. 0000728889-14-000484).

The Securities
and Exchange Commission Staff is requested to address any comments or questions
you may have on this filing to the undersigned at: